Membrane stretch activates a potassium channel in pig articular chondrocytes

Marco Martina, Jerzy W. Mozrzymas, Franco Vittur*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


Activity of stretch-activated potassium channels has been recorded in articular chondrocytes using patch-clamp technique. Pressure dependence is described by a sigmoidal function with a half-maximum effect at -20.5 mbar. Selectivity for potassium is demonstrated by agreement between the reversal potential measured at different [K+](o) and the prediction of Nernst equation and by block of these channels by caesium.

Original languageEnglish (US)
Pages (from-to)205-210
Number of pages6
JournalBiochimica et Biophysica Acta - Biomembranes
Issue number2
StatePublished - Oct 23 1997


  • Articular chondrocyte
  • Hypotonic shock
  • Patch clamp
  • Pig
  • Potassium ion channel
  • Stretch activation

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Cell Biology

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